Speedmaster Small block porting tips and results Part 1

View attachment 1715443321 View attachment 1715443322 View attachment 1715443323 The common wall needs straighten and that Damn ugly bulge for the head bolt goes next along with some chamber work. I have airspeeds both before and after and will drawl a diagram with the numbers ASAP. I usually tube the pushrod to grab more volume and for anyone looking to do so all that is needed is a tubing cutter, JBweld, 17/32 K&S tubing available at Ace Hardware or Amazon for around 5.50 for a 10 inch piece.
Wow that's one heck of head bolt hump there. didn't notice it when you first posted it.
So did you just cut it off to match the straight wall or did you round it into the bowl?